Question: When was Klemens von Metternich of Cathrine Bagration of mother of child?
Paraphrase: When was Klemens von Metternich born to Cathrine Bagration?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q45662 p:P40 ?s . ?s ps:P40 ?obj . ?s pq:P25 wd:Q276487 }